Table 1: Determination of pre-patent period to compare the number of trypanosomes in the brain parenchyma for different strains at the onset of invasion or for the same strain at different time points.

Trypanosome strain: dpi

Pre-patent period ± SD

P-value

T.b.b GVR35 (onset: 6dpi)

5.5 ± 0.50

T.b.b GVR35 vs. T.b.b 729X vs. T.b.b APC098

  P > 0.05

T.b.b 729X (onset 3dpi)

9.0 ± 2.0

T.b.b APC098 (onset 6dpi)

6.75 ± 1.25

T.b.b GVR35 vs. T.b.b GVR35

5.5 ± 0.25 vs. 6 ± 0.25

T.b.b GVR35 vs. T.b.b GVR35: P > 0.05

T.b.b 729X vs. T.b.b 729X

9.0 ± 2.0 vs. 6.0 ± 0.5

T.b.b 729X vs. T.b.b 729X: P > 0.05

T.b.b APC098 vs. T.b.b APC098

6.75 ± 1.25 vs. 4.75 ± 0.75

T.b.b APC098 vs. T.b.b APC098: P > 0.05